Dead power feed

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Russ Hanscom
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Joined: Wed Mar 15, 2006 11:10 pm
Location: Farmington, NM

Dead power feed

Post by Russ Hanscom » Thu Jul 18, 2019 12:02 pm

I have one of the generic X, Y, Z power feeds, today it quit, found the fuse blown, and it blew the replacement fuse as soon as I activated it - while disconnected from the axis. Appears to be an electrical issue.

It is generic, so generic I cannot find a manufacturers name anywhere on it or in the booklet, but it looks like all the others on the outside.

Anyone aware of a source for generic parts? Thinking I need a new circuit board.

Thanks

Patio
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Re: Dead power feed

Post by Patio » Thu Jul 18, 2019 2:06 pm

Russ have you taken it apart yet?
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SteveHGraham
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Re: Dead power feed

Post by SteveHGraham » Thu Jul 18, 2019 2:14 pm

Photo?

I had a problem with an Align feed, and when I called, the guy who runs the company helped me order a new part.
Every hard-fried egg began life sunny-side up.

J.Ramsey
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Location: S/E Kansas

Re: Dead power feed

Post by J.Ramsey » Thu Jul 18, 2019 3:30 pm

You might give these guys a try.
https://www.bestlinepro.com/power-feed-parts.asp

Russ Hanscom
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Joined: Wed Mar 15, 2006 11:10 pm
Location: Farmington, NM

Re: Dead power feed

Post by Russ Hanscom » Thu Jul 18, 2019 5:59 pm

thanks, I will give them a call.

Got a rush project in the works, so the feed is on the bench until I have time; will disassemble later when time permits

Russ Hanscom
Posts: 1573
Joined: Wed Mar 15, 2006 11:10 pm
Location: Farmington, NM

Re: Dead power feed

Post by Russ Hanscom » Mon Jul 22, 2019 5:04 pm

Here is a picture of the dead generic unit, and the temporary high powered replacement. The project continues.
DSC01219.JPG
DSC01220.JPG

armscor 1
Posts: 77
Joined: Sun Jun 12, 2016 3:12 am

Re: Dead power feed

Post by armscor 1 » Tue Jul 23, 2019 4:57 pm

I had a blown Triac in mine, replaced and working OK.Simple circuit board and not difficult to fault find.
First you have to determine if the series universal motor is at fault or the circuit board.
Four wires coming from motor, field winding pair and armature pair to enable forward and reverse rotataion.
I test ran my motor with circuit board removed and using jumpers putting the armature and field windings in series and motor ran at full speed.
Motor good, proceeded to circuit board and found shorted Triac.

Russ Hanscom
Posts: 1573
Joined: Wed Mar 15, 2006 11:10 pm
Location: Farmington, NM

Re: Dead power feed

Post by Russ Hanscom » Tue Jul 23, 2019 8:12 pm

Possibly the problem, the parts list shows a simple circuit board. I just need a little time to disassemble and inspect.

Russ Hanscom
Posts: 1573
Joined: Wed Mar 15, 2006 11:10 pm
Location: Farmington, NM

Re: Dead power feed

Post by Russ Hanscom » Sat Sep 28, 2019 6:18 pm

Finally opened it up and no obvious problem. Found a look alike circuit card at Bestline and ordered one. Got the new card installed today and the unit now runs without blowing the fuse. The old card is available, as noted, no obvious issue.

Bestline has quite a few parts for various power feeds, also some other interesting product lines.

Russ Hanscom
Posts: 1573
Joined: Wed Mar 15, 2006 11:10 pm
Location: Farmington, NM

Re: Dead power feed

Post by Russ Hanscom » Sun Sep 29, 2019 4:22 pm

amscore1;

Do you remember the part number of the triac you used as a replacement? I figure it might be as easy to replace both on the board that I pulled and possibly end up with a good spare board. Probably not worth doing a lot of testing.

armscor 1
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Joined: Sun Jun 12, 2016 3:12 am

Re: Dead power feed

Post by armscor 1 » Thu Oct 03, 2019 4:47 pm

Hi Russ, bought a pack of 10 from Radio Spares, stock No, 509-550, Thyristor, BT151-500C, rated at 7.5 Amps, 500 Volts.
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Russ Hanscom
Posts: 1573
Joined: Wed Mar 15, 2006 11:10 pm
Location: Farmington, NM

Re: Dead power feed

Post by Russ Hanscom » Thu Oct 03, 2019 5:12 pm

Thanks, much appreciated.

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